Assigbrob to hobbs mantt



April 1o, 1928.

C. S. LENSTON FEED ROLLER SUPPORT Filed June 8. 1927 2 Sheets-Sheet l Za j?? April 1o, 192s. 1,665,596

C. S. LENSTON FEED ROLLER SUPPORT Filed June 8. 1927 2 Sheets-Sheet 2 Patented Apr. 10, 1928.

UNITED STATESl CHARLES s. LENSTCN, or WORCESTER, MAssAcHUsErTs Assreuren"ro` noises MANU` lrAc'iImIive COMPANY, or woncssrnn,MAssAciusnTTs, Aco'nroRArIoN or MASSACHUSETTS.

Application led June 8,

. lary kind or `thickness-of lpaper andthe adjustment will notn be' lost or atlected' by the 4application ofv any desiredfpressure to the roller,"`and to providea constructionof such a nature that the feed roller will `always stop on its descent at a predetermined-distance from the feed roll of the machine, and whereby,`when a sheet of cardboard isiintroduced, theroller will be capable of rebounding7 and alsoto exert enough friction to prevent the accidental turning `of the adjusting screw. l

associated parts;

Other objects'and advantagesof the invention will appearhereinafter. i i

`Reference istobehad to thev accompanying `drawingsin which Y v Fig. lis aL sectional view of a preferred embodi-ment'of this invention taken transverse to the supporting bar;

`Fig. 2 ahorizontal sectionalview on-'the line 2-2 ofFig; 1, showing the feed roller and the supporting bar in plan; i Fg. afvertical sectional" view through the centeref the kbar on the line Bmo'f Fig. 1; i Fig. lis a sectional viewoi the pressure feed roller and itsasupports on" the 'line lt of Figi; f HFig'-5 is a plan of the supporting bar and "Fig Gis a sectional view on the line 6;-6 oi Figi; and f Fig., 7 is an elevation of one end of the bar with its bearing in section. A

Itis to be understood that this invention, although capable of other uses,` is especially 'designed for application to ya double scoring machine for scoring cardboard andother sheet materials. Such av machine yis providedwith a strongt'ransve'rse bar 10 ordinarily, and I have shown this bar as having man ROLLERv surronr;

1927. serial NQ.197,45`2.

a slot11 longitudinally situated and adapted to prevent the turning ofthe other parts thereon.` On this bar is fixed' a housing :12 consisting of a single piece of'cast iron` or other material` havingr opposite machined openings through jits: 'sidesV or ianges 18 adapted .to receive the-bar 110. and fitting thereonQto supportithe housing. The. casting is slit at `13 and a tightening .screw 14. is

provided havinga'knob lbywhich itw can be turned to tighten the housingon the barlO. u if l Extending down*throughy the ihousingat each ange is a screw 16 which' holds a key 17 inthe slot `11 andy-as :stated above, holds the housingfrom turning onlthestationary bar 10.' .Insidefthe yflangesfthislhousing is hollow. .1 l Within the.L hollow-.space is aholder 20 which also has a passage;therethrough` machinednandiitting on `the `bar .10, but this Y holder is,capablesofswinging on .the haras at center. I provide means `for connecting the holderto the housing andziadjusting the holder circumferentially" .and securing it in adjusted" positions. The holder has `a passage 21 extending vertically', .inthe form illustrated,` in; which is a screw 22 having a head 23 for turning it,` and an enlargement 24! at the bottoinof a recess in the holder.

0n the. housing I provide a` screwsthreaded opening forza screw 251which has a. knob 26 for turning it,` infwhichis a `passage which is screw-threaded tov receive the threads. on the screw 22.` 4JAlthough ofcourse this screw is otV smaller diameter than thescjrew 25, they havethe saine number of threadsper inch, so that any desired pressure `canvbe applied i without disturbing the previous adjustment olthis screw 22. I: provide a set screw/or the like 28 for forcing inajsot't metal block;29-againstgthe threads yof the screw25. This provides friction so that, when the adjusting screw 22 is turned,V the knob 23 will not rotate readily. 'f f Pressure ist applied by means of a spring 30V seated in arecessl in the bottoni of the screw 25 and inL an enlarged recess above the passagel2l that has been referred to. The ball 24 at the bottom` 'of thescrew rod rests on a seat Blwhichis-held up by aspring 32, which in turn, rests on an radjusting screw plug 33 vin the bottoni` oftheholder. VVThis screw plug can be turned to adjust the pressure and then secured by a setscrew 34.

The housing=is;1'provided with; projecting ends 36 which support the shaft 37 of the feed roller. 38. l,This shaft, is held in ,place by being screwt'hreaded at 'tleendand having a `1ut""39"serewed` on the stud and held by set-screw 40. This nut is locatedin a recess in the housing projectionspi` onboth sides. i i Y g 5 The roller 438 is provided with roller bearings :42 which have `retainingfrings @wat both ends. Each retainingring" has va recess which holds-a fe'ltwasher iifori' preventing the i lubricant from leaking out. The stud 377is' providedswith aeho'le extending in centrallylfrorn 'onefend and having" apassage 45 vby which the grease canI lbe forcedirto the 'ro'llr bearings. A gr'easef' fp'lufngerfi is loctedi'n-tliisliolerand screwed ine-'to forcibly eject-the grease into 'thero'ller bearing.

It :willlbe seen that. tlieflhjousingflvcan be moved longitudinally on the bar l() and clamped :to -fit in Vzany desired Alocation Efby means fof 'the screw "14. It v is' :prevented from" turning kon the .'barfby theikeys" 17 'and thei'rl-serews16 which' hold them ini` place.

The housing isnotfcapab'le-of swinging on the bar and is in stationary positionf after it is 'setfiip y'TheliolderZO' swivels on the bar' and'thus: permitsthefroller 38 to moye nip -l and down. .f Side sway is rprevented lby Y the lit of the liolderf-ragainstv'theinner'sides of the housing.

The l spacev` between fthe. positivelydrfive'n feed roll 49^of`cthe machinewandfthe frictionally driven tfeedE roller L38 is adjusted by theserew 22. Thus, afterfa-sheet of cardboard @has passed between the two rollers and lifted the Yrb-ller 381i against fthe spring pressure,\that rollerrwill `alwaysstop'*on its descent at a @predetermined vdistance from thei fee-d roll f" 19. fThe spring Bvmakes :possible the rebound *of lthe rollerl when a sheet of cardboard is introduced between -the rolls 49.and- 38. "lt also causes-.enough friction tofbeeX'e'rted to prevent Athe adjusting screw 22`fro1n'being 'turned accidentally by 'jars andi-vibrations. Y

@n laccount of-fthelA fact that the'two screws QQfandlQ havefthe j same I" number of threads per inch-, a.1'i'y*`d`esi'fjed pressurecanbe applied to the rolllerl 38j without' changing the. adjustment. This i{scif'ew"251isilield as Statedfto prevent "its f'tui'iiin'g'whenlthe-head Q2jis turned. Obviously the @spring lexerts pressure t'o for'ce'-`tl'ie`holder3 down .as far as the adjustment f-"the screw 22 willfallowfit to "go, andjyet ll'eaye 'theholfderE free to' swing upwardly if any pressure is =1 applied 'suffiy'ciently "to'fove'rc'ome, 'finp'arhf 'the resistance f this spring. fTlierollervbearings'ofthe roller BSfliay'e-also beendescrib'ed fandfafl'so tliefway bf lubricating them.

The bar 10 is supported at its ends in bearings 50 so as to be capable of being turned slightly to lift all the feed rollers simultaneously and then move vthem back against the feed roll 49, without losing their individual adjustments. This is done by providinga short 1aclrf5l-onthe cylindrical surface of the bar and"opelatingitby a worm 52. This worm isf loc'atedo'nia shaft 53 and turned by a knob 54. The shaft passes through an adjust-able bushing 55 adapted to be set by a set screw 56. After adjustment'dcwn into operativer position'the bar 10 is rederedstationary by the-rack and'pwornil construction. Y

I have not illustrated Athe machine .on Which @this vatt,achrnent is mounted, Ybut it will be understood that it comprises thefeed roll .49, the .stationary )bar 10,1and scoring devices, Thisdeviceican beilplacedon such afrnachinein yplace offtlie ordinary construei'fiOIlS. heretofre .empleyd- Although-I have illustrated and described only a Ysing-le formofthe inventionv Iam aware Q the fact. that. changes Vbe vrmade therein -by anyperson skilled in .the art without departing from` the scopeiof the 1inventionasfexpressed in the claims. .Therefore I donot wish to be-liinited.AtotheeXact form shown, but what do claim is u VV1. In ja Asupport for-a ,pressurelnroiller to cooperate with a: feed #roll-to feedfsheet linateria-l,E the; combination =with j a #supporting barf andaho'llow housing Afixed .positively to it in stationary position, lay .holder swiveled on said bar Within the housing, means onftlie holder for "supportinga pressure feed'ro'ller in a condition free '-torotate, -andlmeansfor adj listingthe Eheight of. the feed rollerand limiting its downward motion toward:V said feed roll, constitutingafstop beyond which the feed roller eannotdescend'on the vreboignd downwardly. l i M 52.* linea. support -forlafpressure roller to cooperate withfa positively A`driven'A feed roll to feed sheet materalthrough'fainachine, the combinationwithfa supporting ybar and a hollow housing-adjustable along the (bar and adapted to 'be fixed positively to it .in stationary position, abholderl swiveled onfsaid bar wi-thinthe housing, means on theholder for supporting a pressure feedmroller in a condition free to rotate, 'means fonadj listing the height of the feed roller and limiting its .downwardffmotion towardsai'd feed roll, and yielding means for holding thefeed rollerdown under yielding: pressure but permitting it to move :upwardlyunderpinssure, -thevadjustingfrneans constituting a stop beyond which the feed rollery cannotdescend on the rebound downwardly. i

Inra scoringmachine, the conibination with a.' driven feedrollland supporting.' bar, o fa housing, -meansfor preventingthe hous- -ing from turning on the bar, said' housing having a space therein surrounding Vthe bar,

- a screw having a knob and mounted in the housing,y ascrew rthreaded through the first named screw with threads of the same pitch,

and means for 4holding the outer screw from turning after it is adjusted.

4. In a scoring machine, the combination with a driven feed roll and supporting bar both extending across the machine on parallel axes, of a housing adjustable along said bar, means for fixing the housing to the bar, positive meansforpreventing the housing from turning on the bar, said housing having a space therein surrounding the bar,'a holder located in said space and fitting therein to prevent side-play and having means for supporting a feed roller to coopcrate with said feed roll of the machine, means for adjusting said holder about the bar, said means cooperating with the housing and constitutinga positive stop against the feed roller moving in one direction, yielding means for resisting its rmotion in the opposite direction and for restoring it to its extreme position, a screw having a knob adjustable in a circumferential direction with respect to the bar and mounted in the housing, said limiting means compris ing a screw threaded through the first named screw with threads of the same pitch, whereby pressure can be applied to the roller without interfering with the adjustment thereof, and means for holding the outer screw from turning after it is adjusted.

5. In a scoring machine, the combination with a feed roll and supporting bar, of a housing, means for fixing the housing to the bar, said housing having a space therein, a holder located in said space, a feed kroller supported by the holder to cooperate with said feed roll of the machine in a manner to rotate freely on its own axis, a screw rod connecting the housing and holder having a ball at the lower end vfitting in a seat in the holder, a rest engaging the bottomof the ball, and a spring supported by the holder for holding the said rest against the ball.

G. In a scoring machine, the combination with a feed roll and supporting bar both extending across the machine on parallel axes, of a housing adjustable along said bar, means for fixing ythe housing to the bar, positive means to prevent the housing from turning on the bar, said housing having a space therein, a holder located in said space, a feed roller supported lby the holder to cooperate with said feed roll of the machine in a manner to rotate freely on its own axis, means for adjusting the holder about the bar, said means having a positive stop against the feed roller moving in one direction, means for yieldingly resisting its motion in t-he opposite direction and for restoring it to its extreme position, and limiting means comprising a screw rod connecting the housing and the holder havinga ball at the lower end fitting in a seat in the holder, a rest engaging the bottom of the ball, and a spring supported by the holder for holding the said rest against the ball, the pressure of said spring being adjustable. f Y

7. In a sheet feeding device, ythe combination with la supporting bar and a housing fixed to it, of a holder swiveled on said bar, a pressure feed roll supported on said holder in a condition free to rotate, means for adjusting thelieight of the feed roller vand limiting its downward motion, yielding means for holding the feed roller down under pressure but permitting it to move upwardlyyunder pressure, the adjusting means constituting a stopV beyond which the feed roller cannot descend' on the rebound downwardly, a stud about which said feed roller is rotatable, roller bearings for said stud, and means for applying pressure to force grease into the roller bearing.

8. In a sheet feeding device, the combination with a supporting bar, of a holder swiveled on said bar, a pressure feed roll supported on, said holder in a condition free to rotate, means for adjusting the height of the feed roller and limiting its downward motion, yielding means for holding the feed roller down under pressure but permitting it to move upwardly under pressure, the adjusting means constituting a stop beyond which the feed roller cannot descend on the rebound downwardly, a stud about which said feed roller is rotatable, and means for connecting the holder with the bar.`

9. In a sheet feeding machine, the combination with a supporting bar mounted to turn inV bearings, a'series of feed rollers on the bar andr means for adjusting the rollersv individually, of a rack formed on a. circular surface of the bar and a worm meshing with the rackfor lifting the feed rollers and moving them back into operative posit-ion.

10. In a sheet feeding machine, the combination with a supporting bar mounted to turn vin bearings, and means for turning it at willfand forholding it stationary when adjusted, of a series of feed rollers on the bar and' means for adjusting the rollers individually, whereby all of the rollers can ber lifted by turning the bar and can be brought down again into operative position without disturbing their adjustments.

` In testimony whereof I have hereunto affixed my signature.

CHARLES S. LENSTON. 

